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    Thin-film magnetic head having a portion of the upper magnetic core coplanar with a portion of the lower magnetic core
    1.
    发明授权
    Thin-film magnetic head having a portion of the upper magnetic core coplanar with a portion of the lower magnetic core 失效
    薄膜磁头具有与下部磁芯的一部分共面的上部磁芯的一部分

    公开(公告)号：US5872693A

    公开(公告)日：1999-02-16

    申请号：US826749

    申请日：1997-03-24

    申请人： Hiroaki Yoda ,  Atsuhito Sawabe ,  Naoyuki Inoue ,  Akio Hori

    发明人： Hiroaki Yoda ,  Atsuhito Sawabe ,  Naoyuki Inoue ,  Akio Hori

    IPC分类号： G11B5/31

    CPC分类号： G11B5/3113 ,  G11B5/3116 ,  G11B5/313 ,  G11B5/3146 ,  G11B5/3153 ,  G11B5/3163

    摘要： A thin-film magnetic head comprising a lower magnetic core formed on a substrate, an upper magnetic core formed on the lower magnetic core with a magnetic gap therebetween, and a coil interposed between the lower magnetic core and the upper magnetic core as insulated from the lower magnetic core and the upper magnetic core, characterized in that at least either of the lower magnetic core and the upper magnetic core comprises a front body of a magnetic pole facing a magnetic recording medium and a rear body of a magnetic pole having part thereof superposed on the front body of the magnetic pole, the rear body of the magnetic pole is disposed as recessed from the head surface facing the medium and held in contact with the front body of the magnetic pole in a plane, the plane is terminated at a rear of the end of the front body of the magnetic pole, and the rear body of the magnetic pole has a shape curved or bent in the direction opposite to the magnetic gap, and further the front body of the magnetic pole is composed of a magnetic member embedded in a trench formed in advance in an insulating layer.

    摘要翻译： 一种薄膜磁头，包括形成在基板上的下磁芯，形成在下磁芯上的上磁芯，其间具有磁隙，以及插入在下磁芯和上磁心之间的线圈， 下磁芯和上磁芯，其特征在于，下磁芯和上磁芯中的至少一个包括面向磁记录介质的磁极的前体和磁极的后体，其部分叠加 在磁极的前体上，磁极的后体被设置为从面向介质的头表面凹陷并且在平面中与磁极的前体保持接触，平面终止在后面 的磁极的前体的端部，并且磁极的后体具有与磁隙相反的方向弯曲或弯曲的形状，并且还具有前体o f磁极由嵌入在预先形成在绝缘层中的沟槽中的磁性构件组成。

    Recording-reproducing magnetic head
    3.
    发明授权
    Recording-reproducing magnetic head 失效
    记录再现磁头

    公开(公告)号：US06362940B1

    公开(公告)日：2002-03-26

    申请号：US09520633

    申请日：2000-03-07

    申请人： Hiroaki Yoda ,  Atsuhito Sawabe ,  Hitoshi Iwasaki ,  Naoyuki Inoue ,  Akio Hori

    发明人： Hiroaki Yoda ,  Atsuhito Sawabe ,  Hitoshi Iwasaki ,  Naoyuki Inoue ,  Akio Hori

    IPC分类号： G11B539

    CPC分类号： B82Y25/00 ,  B82Y10/00 ,  G11B5/3116 ,  G11B5/3163 ,  G11B5/3929 ,  G11B5/3967 ,  G11B2005/3996

    摘要： A recording-reproducing magnetic head comprising a magnetoresistance effect reproducing head and an inductive recording head. The magnetoresistance effect reproducing head having a magnetoresistance effect element and the inductive recording head having a lower magnetic core, an upper magnetic core, coils sandwiched between the lower and upper magnetic cores at their mid-parts, and a recording magnetic cores at leading end parts. The leading end parts of the lower and upper magnetic cores having a protruding part protruding to the recording magnetic gap layer and the upper magnetic core having a continuous magnetic body which extends from the protruding part to the mid-part. A center line of the protruding part of the lower magnetic core, which extends in a track length direction on a surface opposite a medium, intersecting the protruding part of the upper magnetic core.

    摘要翻译： 一种记录再现磁头，包括磁阻效应再现头和感应记录头。 具有磁阻效应元件的磁电阻效应再现头和具有下磁芯，上磁芯，夹在下磁芯和上磁心之间的线圈的感应记录头及其前端部的记录磁芯 。 下磁芯和上磁芯的前端部具有突出部分，突出部分到记录磁隙层，上磁芯具有从突出部分延伸到中间部分的连续磁体。 下磁芯的突出部分的中心线，其在与介质相对的表面上的轨道长度方向上延伸，与上磁芯的突出部分相交。

    Thin-film magnetic head having improved magnetic pole structure
    4.
    发明授权
    Thin-film magnetic head having improved magnetic pole structure 有权
    具有改善的磁极结构的薄膜磁头

    公开(公告)号：US06198597B1

    公开(公告)日：2001-03-06

    申请号：US09153858

    申请日：1998-09-16

    申请人： Kohichi Tateyama ,  Hiroaki Yoda ,  Atsuhito Sawabe ,  Naoyuki Inoue ,  Akio Hori ,  Tadahiko Kobayashi ,  Hiromi Sakata ,  Michiko Hara ,  Takasi Koizumi ,  Tomohiko Nagata ,  Takeo Sakakubo ,  Kei Sakoda

    发明人： Kohichi Tateyama ,  Hiroaki Yoda ,  Atsuhito Sawabe ,  Naoyuki Inoue ,  Akio Hori ,  Tadahiko Kobayashi ,  Hiromi Sakata ,  Michiko Hara ,  Takasi Koizumi ,  Tomohiko Nagata ,  Takeo Sakakubo ,  Kei Sakoda

    IPC分类号： G11B531

    CPC分类号： G11B5/3113 ,  G11B5/3116 ,  G11B5/3163

    摘要： A thin-film magnetic head comprises a magnetic gap disposed to be positioned on an air bearing surface of the magnetic head, a pair of magnetic poles disposed to hold the magnetic gap therebetween, and a coil positioned between the pair of the magnetic poles to intersect the magnetic poles, wherein at least one of the magnetic poles being composed of a T-shaped magnetic pole, the T-shaped magnetic pole comprising a front part of a magnetic pole contacting with the magnetic gap, an intermediate part of a magnetic pole lying on the front part, and a rear part of a magnetic pole lying on the intermediate part, wherein a width of the front part roughly defines a track width, the rear part has a wider width in a direction of track width than a width of the front part, and the intermediate part contacts with the rear part at an entire width of the rear part at the air bearing surface and has a narrower width at a contacting face with the front part than the width of the rear part.

    摘要翻译： 薄膜磁头包括设置在磁头的空气轴承表面上的磁隙，设置成保持磁隙的一对磁极和位于一对磁极之间的线圈，以相交 磁极，其中至少一个磁极由T形磁极组成，T形磁极包括与磁隙接触的磁极的前部，位于磁极的中间部分 在前部的前部和位于中间部的磁极的后部，前部的宽度大致限定轨道宽度，后部在轨道宽度方向上的宽度比宽度宽 前部，并且中间部分在后部的空气轴承表面的整个宽度处与后部接触，并且在与前部的接触面处具有比后部的宽度更窄的宽度。

    Yoke-type head with magneto-resistance effect film recessed from medium facing surface and extending across magnetic gap
    8.
    发明授权
    Yoke-type head with magneto-resistance effect film recessed from medium facing surface and extending across magnetic gap 失效
    具有磁阻效应膜的轭型磁头，从介质面向表面凹陷并延伸穿过磁隙

    公开(公告)号：US06369992B1

    公开(公告)日：2002-04-09

    申请号：US08909687

    申请日：1997-08-12

    申请人： Hiroaki Yoda ,  Atsuhito Sawabe ,  Hitoshi Iwasaki ,  Yuichi Ohsawa ,  Masashi Sahashi ,  Tadahiko Kobayashi

    发明人： Hiroaki Yoda ,  Atsuhito Sawabe ,  Hitoshi Iwasaki ,  Yuichi Ohsawa ,  Masashi Sahashi ,  Tadahiko Kobayashi

    IPC分类号： G11B539

    CPC分类号： B82Y25/00 ,  B82Y10/00 ,  G11B5/3903 ,  G11B5/3977 ,  G11B2005/3996

    摘要： A magneto-resistance effect head records and reproduces recorded magnetic material. The magneto-resistance effect head has a magneto-resistance effect film connected to a pair of leads. Additionally, a magnetic yoke, with a first and second magnetic yoke member, directs a signal magnetic field from a recording medium to the magneto-resistance effect film. The magneto-resistance effect head is constructed such that the first and second magnetic yoke members have surfaces that face the recording medium. The surfaces of the first and second magnetic yoke members have a magnetic gap between them. Additionally, the magneto-resistance effect film is recessed from the medium facing surfaces by a predetermined distance. Moreover, the first and second magnetic yoke members are aligned almost in parallel with the magnetic flux flow from the recording medium to the first magnetic yoke member, the magneto-resistance effect film, and the second magnetic yoke member.

    摘要翻译： 磁阻效应头记录和再现记录的磁性材料。 磁阻效应头具有连接到一对引线的磁阻效应膜。 此外，具有第一和第二磁轭构件的磁轭将来自记录介质的信号磁场引导到磁阻效应膜。 磁阻效应头被构造成使得第一和第二磁轭构件具有面向记录介质的表面。 第一和第二磁轭构件的表面之间具有磁隙。 此外，磁阻效应膜从面向介质的表面凹陷预定距离。 此外，第一和第二磁轭构件几乎与从记录介质到第一磁轭构件，磁阻效应膜和第二磁轭构件的磁通流平行排列。

    Magnetic head manufacturing method
    9.
    发明授权
    Magnetic head manufacturing method 失效
    磁头制造方法

    公开(公告)号：US06751846B2

    公开(公告)日：2004-06-22

    申请号：US10401869

    申请日：2003-03-31

    申请人： Susumu Hashimoto ,  Michiko Hara ,  Tomohiko Nagata ,  Kohichi Tateyama ,  Masatoshi Yoshikawa ,  Takeo Sakakubo ,  Hiroaki Yoda ,  Akio Hori ,  Takashi Koizumi

    发明人： Susumu Hashimoto ,  Michiko Hara ,  Tomohiko Nagata ,  Kohichi Tateyama ,  Masatoshi Yoshikawa ,  Takeo Sakakubo ,  Hiroaki Yoda ,  Akio Hori ,  Takashi Koizumi

    IPC分类号： G11B5127

    CPC分类号： G11B5/313 ,  G11B5/3116 ,  G11B5/3163 ,  G11B5/3967 ,  Y10T29/49044

    摘要： A method for manufacturing a magnetic head which includes a lower write pole having a projection, an upper write pole having a projection opposed to the projection of the lower write pole, and a magnetic gap interposed between the projection of the upper write pole and the projection of the lower write pole, comprising: a first step of making the magnetic gap on the projection of the lower write pole; a second step of making a non-magnetic material layer on the lower write pole, the non-magnetic material layer having a projection on its top surface in positional alignment with the projection of the lower write pole; a third step of making a mask layer on the non-magnetic material layer, the mask layer having an opening in which the top surface of the projection of the non-magnetic material layer is exposed; a fourth step of making a curved recess in the non-magnetic material layer by isotropically etching the non-magnetic material layer through the opening of the mask layer; a fifth step of making an approximately tapered recess down from the bottom of the curved recess by anisotropically etching the non-magnetic material layer through the opening of the mask layer; and a sixth step of making the upper write pole by burying a magnetic material in the tapered recess and the curved recess is provided.

    摘要翻译： 一种用于制造磁头的方法，该磁头包括具有突出部的下部写入极，具有与下部写入磁极的突起相对的突出部的上部写入磁极，以及插入在上部写入磁极和突起之间的磁隙 包括：使下部写入极的投影上的磁隙形成的第一步骤; 在下写入磁极上制作非磁性材料层的第二步骤，非磁性材料层在其顶表面上具有与下写入磁极的突起位置对准的突起; 在非磁性材料层上形成掩模层的第三步骤，所述掩模层具有露出所述非磁性材料层的突起的顶表面的开口; 通过所述掩模层的开口对所述非磁性材料层进行各向同性蚀刻来制造所述非磁性材料层中的弯曲凹部的第四工序; 第五步骤，通过通过掩模层的开口各向异性蚀刻非磁性材料层，从弯曲凹槽的底部向下形成大致锥形的凹陷; 并且提供通过将磁性材料埋入锥形凹部和弯曲凹部中来制造上部写入极的第六步骤。

    Thin film magnetic head having an improved heat dispersion and magnetic recording apparatus using the same
    10.
    发明授权
    Thin film magnetic head having an improved heat dispersion and magnetic recording apparatus using the same 失效
    具有改进的热分散性的薄膜磁头和使用其的磁记录装置

    公开(公告)号：US06256171B1

    公开(公告)日：2001-07-03

    申请号：US08937183

    申请日：1997-09-29

    申请人： Hiroaki Yoda ,  Akio Hori ,  Yuichi Ohsawa ,  Masashi Sahashi ,  Masatoshi Yoshikawa ,  Miki Mori

    发明人： Hiroaki Yoda ,  Akio Hori ,  Yuichi Ohsawa ,  Masashi Sahashi ,  Masatoshi Yoshikawa ,  Miki Mori

    IPC分类号： G11B539

    CPC分类号： B82Y25/00 ,  B82Y10/00 ,  G11B5/10 ,  G11B5/105 ,  G11B5/3106 ,  G11B5/3967 ,  G11B5/40 ,  G11B2005/3996 ,  Y10S977/934

    摘要： A thin film magnetic head has a reproducing element or/and recording element which is held from the direction of its thickness between a first ceramic substrate and a second ceramic substrate. The reproducing element or/and recording element is positioned at substantially the center with respect to the direction of track width. The first and second ceramic substrates hold the reproducing element or/and recording element from, for example, the direction of track width. The reproducing element or/and recording element is provided with a yoke type reproducing part which has at least one pair of magnetic cores with a magnetic gap therebetween on the side of a medium opposed face and a magnetoresistance effect element to which a signal magnetic flux from a magnetic recording medium is led through the pair of magnetic cores. Heat due to a sense current and heat due to the contact between the reproducing element or/and recording element and the magnetic recording medium are efficiently dissipated to the first and second ceramic substrates, thereby retarding a temperature increase of the reproducing element or/and recording element. Abrasion in the neighborhood of the reproducing element or/and recording element is retarded by the first and second ceramic substrates. A magnetic recording apparatus is provided with a magnetic recording medium, and a magnetic head slider having the thin film magnetic head described above.

    摘要翻译： 薄膜磁头具有从第一陶瓷基板和第二陶瓷基板之间的厚度方向保持的再现元件或/和记录元件。 再现元件或/和记录元件相对于轨道宽度的方向基本上位于中心。 第一和第二陶瓷衬底从例如轨道宽度的方向保持再现元件或/和记录元件。 再现元件或/和记录元件设置有磁轭式再现部件，该磁轭式再现部件在介质相对面侧具有至少一对磁芯，其间具有磁隙，并且磁阻效应元件具有来自 磁记录介质被引导通过一对磁芯。 由于由于再现元件或/和记录元件与磁记录介质之间的接触而产生的感测电流和热的热量被有效地耗散到第一和第二陶瓷基板，从而延迟再现元件的温度升高或/和记录 元件。 在再现元件或/和记录元件附近的磨损被第一和第二陶瓷衬底延迟。 具有磁记录介质的磁记录装置和具有上述薄膜磁头的磁头滑块。